Urinary System diseases Flashcards
Name the 5 main roles of the Urinary system
- Filter waste from blood + Excrete it as urine
- Maintain ECF balance
- Balance nutrients (e.g. minerals)
- Produce the hormone Erythropoietin (Stimulating bone marrow to produce RBCs)
- Assists w/regulation of pH + BP
What is Erythropoetin’s most vital role?
To stimulate the bone marrow to create/produce RBCs
What does UUTD stand for?
Upper Urinary Tract Disease
What 2 structures does UURT affect?
- Kidneys
- Ureters
What are the 2 types of UUTD?
- Chronic
- Acute
Give 2 basic Acute examples of UUTD
- Acute Kidney Disease (AKD)
- Acute Renal Failure (ARF)
Give 2 basic Chronic examples of UUTD
- Chronic Kidney Disease (CKD)
- Chronic Renal Failure (CRF)
What breed is the poster breed for Polycystic Kidney Disease (PKD) ?
Persians!
(10)
Name as many aeitologies for UUTD as you can!
- Infection
- Pyelonephritis
- Feline Infectious Peritonitis (FIP)
- Toxaemia
- Nephrotoxins
- Calculi
- Tumors
- Polycystic Kidney Disease (PKD)
- Secondary to Urinary Tract Obstruction (URTO) or other systemtic disease
- Acute on chronic Crisis!
What 2 things does Kidney disease eventually lead to?
Renal insufficiency > Renal failure
What does Renal insufficency mean?
Damaged kidneys that can still process waste, but clinical signs are not yet evident!
What is Renal failure?
- Damage to the kidneys that increases to a point where waste cannot be processed
- 75% of nephrons are damaged
- Clinical signs are apparent
What is the difference between renal insufficiency + renal failure?
- Renal insufficiency is when the kidneys can still function to filter minimal waste, despite the damage + no clinical signs are present
- Whereas Renal failure is the where the irreversible damage has occured in 75% of the nephrons, where clinical signs are apparent
Does the kidney’s ability to concentrate urine decline earlier or later with kidney disease?
Early
What type of maintanance does the kidney perform that becomes affected when renal disfunction is decreased, due to disease?
Ability to maintain fluid + electrolyte homeostasis
Describe what occurs in Renal Functional Adaptation (RRA)
- Renal Functional Adaptation is when the renal tissue begins to lose function and starts to compensate to adapt to the body’s needs
- The remaining non-damaged tissue increases it’s performance (abnormally)
- The loss of 75% of nephrons/renal tissue causes a fall in the Glomeular Filtration Rate (GFR) to 50% of normal
- The plasma concentration of Creatinine + Urea rise as the GFR diminishes, leading to Azotaemia
What is the GFR?
- The Glomerular Filatration Rate
- A test used to estimate how much BP passes through the Glomeruli per minute
Define what is meant by Azotaemia?
An increase of Nitrogenous waste products in the blood stream
What nitrogenous waste products can be found in the blood, with Azotaemia?
- Creatinine
- Urea
What test can indicate the presence of Azotaemia?
BUN
(Blood, Urea, Nitrogen)
What 2 clinical signs may cause Azotaemia in the pre-renal disease stage?
- Dehydration
- Shock
What 2 clinical signs may cause Azotaemia in the Renal disease stage?
- Nephrotoxins
- Glomerulonephritis
What 2 clinical signs may cause Azotaemia in the post-renal disease stage?
- Urinary obstruction
- Trauma
What are the possible aietologies of Acute Kidney Disease/Failure?
- Toxins
- Trauma
- Lower Urinary Obstruction
What happens to the cells + renal blood flow with Acute Kidney Disease/Failure?
- Cellular damage
- Reduced renal blood flow occurs
True or False.
Acute Kidney Disease/Failure does not require emergency treatment + hospilisation.
False!
It’s a vital emergency!
True or False.
AKD or AKF can present with the same clinical signs as Azotaemia.
True!
As Azotaemia is clinical sign that is evident with AKD or AKF.
True or False.
Once the kidneys are no longer able to compensate, the patient will present with signs of KF.
True
What is the most common aetiology for CKD?
Idiopathic deterioration of the geriatric cat!
(8)
Name as many aietologies for CKD as you can
- Idiopathic deterioration
- Previous acute renal damage (Due to injuries or toxins)
- Neoplasia
- PKD
- Chronic infection
- Pyelonephritis
- Glomerulonephritis
- Concurrent conditions (DM, Hypertension)
What is the basic pathophysiology of Renal Failure?
The kidney is simply unable to filter the nitrogenous waste from the blood
What is Uraemia + Why do RKF patients present with this?
- Uraemia is the presence of high levels of Urea in the blood
- Urea is a nitrogenous waste product excreted by the kidneys, normally in the urine. When the kidneys lose their ability to filter these waste products, they build up in the blood, leading to Uraemia
Finish the sentence.
Deterioration of renal function causes p_ + e_________ ________ in RF.
pH + Electrolyte imbalances!
What 2 minerals become imbalanced due to a decrease in renal function?
- Potassium
- Phosphate
What hormone, excreted by the kidney, leads to reduced erthyrocute formation in the bone marrow?
Erythropoietin!
What does ‘reserve capacity of the kidney’ mean?
That the clinical signs of RF only appear when 2/3 - 3/4 of the functioning tissue is lost